Computing and recording machine.



. WITNESSES my law S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUG-l5 1911.

ms NaRms masks m, PHIITD-LITHDU WAsI-uucmu. n. z;

Patented Sept. 3,191s.,

1:2 SHEET$-SHEET 1.

INVENTOR S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUG.I5. 19H.

Patented Sept. 3, 1918.

I2 SHEETS-SHEET 2.

WITNESSES:

7. 8/5 MW A, M

A T TORNE Y S. F. SMITH.

COMPUTING AND RECORDING MACHINE. APPLICATION FILED Aus.15. I911.

1,278,049. Patented Sept. 3,1918.

I2 SHEETSSHEET 3- WITNESSES:

S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUG.K5.19H. 1,278,049. PatentedSept. 3,1918..

12 SHEETS-SHEET 4.

INVENTOR WITNESSES:

5? ATTORNEY S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

INVEH'TOR m M WITNESSES:

A TTORNE V lam? S. F. SMITH.

COMPUTING AND RECORDING MACHINE,

APPLICATION 1150 111113.15. 1911.

1,278,049. P11611161 Sfipt. 3,191s..

12 SHEETS-SHEET 6.

7b 20 a WIT/VESiEfi' 5 's: INVENTUR 5158. Mia-mg m5 1110mm FEYKRSCO.F'NOYU-LIIHO.WASHINCYON1 0 c.

s. F. SMITH. COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUG-15.15"]- 1,278,049. Patented Sept. 3,1918.

I2 SHEETSSHEET 7.

\"IINVENTOR WITNESSES S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLlCATlON FILED AUG,15| 1911.

1,278,049. Patented Sept. 3,1918.

I2 SHEETS-SHEET 8.

Solh

w/ TAM-555s n VIM VENTUR k/W M dag,

m; NORRIS PETERS co Punmurua. wAsHmarwv, n c.

S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

' APPLICATION FILED AUG.|5.19H.

Patented Sept. 3, 1918.

l 2 SHEETS-SHEET 9- INVENTOFI WITNESSES n Yet/QM.

S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUG-15.1911.

w" F? HI w 'l H M l Hl S. F. SMITH. COMP-UTINGAND'RECORDING MACHINE.

APPLICATION FILED AUG.I5. 19H.

Patented Sept. 3, 1918.

I2 SHEETSSHEET H..

S E S S E N W W INVENTOR P Y awt WZ M ATT RNEY dam/m S. F. SMITH.

COMPUTING AND RECORDING MACHINE.

APPLICATION FILED AUGJS. 19H.

Patented Sept. 3, 1918.

1'2 SHEETS-SHEET 12 W ITNESSES INVENTOR JTV/lfif F 6/14/70 ATTORNEYUNITED STATES PATENT OFFICE STUART F. SMITH, OF SAN FRANCISCO,CALIFORNIA.

COMPUTING AND RECORDING MACHINE.

Application filed August 15, 1911.

To all whom it may concern I Be it known that I, STUART F. SMITH, acitizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented new and usefulImprovements in Computing and Recording Machines, of which the followingis a specification.

My invention relates to what are commonly known as adding machines, andmore especially to that type thereof which are capable not only ofadding or accumulating, but also of printing or listing, a series ofitems or amounts, and of printing a total thereof, such as the wellknown Burroughs adding and listing machine, constructed under and insubstantial accordance with Letters Patent of the United States Nos.504:,963 and 505,078, issued upon the application of Villiam S.Burroughs on September 12,

1893, and No. 823,474, issued upon the application of Alvan Macauley onJune 12, 1906.

The Burroughs machine, constructed under and in accordance with theabove-mentioned patents, and other similar machines now upon the market,are capable of, and are regularly employed for, listing and accumulatingindividual items or amounts and printing totals or sub-totals thereofwhen desired.

The object of this invention is to provide an adding machine of thisgeneral type or ch. "acter with improved means, so that the machine canbe used not only for the purposes as outlined above, but also, at thedis cretion of the operator, for making duplicate entries, the total ofall said duplicate entries being registered in a separate accumulator.Moreover, I provide means by which this invention can be used forprinting entries in a book or on a voucher, of an adjustable and movablecarriage adapted to hold said book or voucher, and carrying said book orvoucher to a hidden printing position. and means by which allaccumulations of amounts entered in said books or on said vouchers arelocked against any change on the part of the operator or other personnot authorized to change said accumulator, GX cept to add thereto.

I have illustrated my invention as embodied in the well known Burroughsmachine, and I have provided novel and etlicicnt mechanism for equippingsuch a machine for the various sorts of work referred Specification ofLetters Patent.

Patented Sept. 3, 1918.

Serial No. 644,142.

to, without interfering with its normal and f 'uuiliar operation anduse; but my invention is not limited in its application or scope to theBurroughs machine, but may be embodied in other machines of the samegeneral class for the same purposes and with the same results.

In the accompanying drawings, Fig. 1 is a broken front view of themachine, the lower portion of the casing being broken away; Fig. 2 is aside view on a reduced scale, a side of the casing being removed; Fig. 3is a horizontal section of the machine, showing in plan view themechanism which, in my invention, is attached tothe Burroughs machine;Fig. a is a. side view similar to Fig. 2, of the machine viewed from theopposite side; Fig. 5 is a side view of the machine, the casing beingshown in section,

and certain parts which are shown in Fig. 2

being omitted; Fig. 6 is a front view of the machine, certain parts ofthe casing and mechanism being omitted; Fig. 7 is a plan view of theparts shown in Fig. 6; Fig. 8 is a fullsized detail view, showing moreparticularly certain shifting mechanism; Fig. 9 is a side view of thesame; Fig. 10 is a detail rear view of the same; Fig. 11 is a detailfront view on a greatly reduced scale of the machine as a whole; Fig. 12is a side view thereof on the same scale; Fig. 13 is a broken plan view,oartly in section, on the line 1313 of Fig. 15 of the casing for myattachment to the Burroughs machine; Fig.

'14 is a side view, partly in longitudinal section, of the same; Fig. 15is a front view, partly in section on the line 1515 of Fig. 13; Fig. 16is a detail perspective view of the type shifter bar; Fig. 17 is asimilar view of another type shifter bar; Fig. 18 is a detailperspective View of a trigger arm; 19 is a similar view of a hammer;Fig. 20 is a similar view of a type controller arm; Fig. 21 is aperspective view of a guide rod; Fig. 22 is a similar view of atype-supporting bar; Fig. 23 is a similar view of a type bar; Fig. 24 isa view similar to Fig. 6, certain parts, however, being omitted, andother parts shown being in their other position; Fig. is a side view ofa key in its depressed position; Fig. 26 is a similar view of the key inits elevated position; Fig. 27 is a perspective view of a spacer for thetype shifter bars; Fig. 28 is a plan view of the supporting plate; Fig.29 is a transverse section thereof; Fig. 80 is a plan view of theplaten; Fig. 31 is a section thereof; Fig. 32 is a plan view of theslide plate; Fig. 33 is a transverse view thereof, Fig. 34 is atransverse section of the parts shown in Figs. 28, and 32 assembled;Fig. 35 is a plan view of a transverse controlling bar; Fig. 36 is asectional view of a button on the end of said bar; Fig. 37 is a planview of a slide bar; Fig. 38 is a front view of a head; Fig. 39 is afront view of a spacing bar; Fig. 40 is a side view of a lever; Fig. 41is an edgeview ofv the same; Fig. 42 is an edge View of another lever;Fig. 43 is a detail View of a controlling bar.

Fig. 44 is a side elevation partly in section of the accumulator wheelsshowing the position occupied by the highest accumulator wheel whenabout to be stopped to prevent the machine from clearing the zero.-

Fig. 45 is a side elevation partly in section of the pass book type barsand showing the striking hammer just ready to strike the numeral 8.

Fig. 46 is a detail in side elevation and on a slightly larger scale toshow the posiinvention.

tion occupied by the type bars when the numeral is to be struck, and

Fig. 47 is a sectional view through the type bars showing the positionsthey occupy when a figure is to be struck by the last one of the set andzeros to be struck by all of those bars at the right of the numeral 8below one of them.

The Burroughs adding and listing machine is well known through extensivecommercial use and through .various patents thereon; nevertheless itWill greatly assist in explaining the present invention to enumeratemany familiar parts of such machine, before proceeding to a descriptionof the new parts employed for carrying out the present As iswell knownthe 'Burroughsmachine is provided with a keyboard having a series ofkeys 528 (Fig. 2) arrang'edin rows representing the differentdenominations, increasing from right to left, of figures to be added andthe keys of each row representing the digits'l to 9. These keys arearranged to control or operate a series of stop wires or rods 530, andthus to determine the extent of movement, or descent, of a series ofsectors or racks 601, corresponding in number with the rows of keys, itbeing understood that, in the operation of the machine, a rack,corresponding to a row of keys in which one of the keys has beenoperated, is permitted to descend a distance corresponding in magnitudewith the numeral of the particular key operated or depressed.Furthermore, in a Burroughs machine each rack is provided with -aretainer 602 which is operated by a sliding bar 531 corresponding innumber to the rows of keys and moved rearwardly whenever a key inpendent at its forward end a projection 532,

which, upon the rearward movement of said bar, engages a transverse rod533, said transverse rod beingsecurely fastened at either end to theforward upper part of bent arms 534R and 534L (Fig. 1), which rock with'a shaft 535, the lower ends of said arms be ing rigidly fastened tosaid rock shafts 535, and said shaft having bearings at its ends in theupper portions of the side frames of the machine.

v The-transverse rod and the arms 534R and 534L are rigidly connected,and act as aframe, and are held in a forward position by a tensionspring 536 (see Fig. 4) fastened at its rear end to the arm 534R,1andits forward end to the frame of the machine. The arm 534L is divided atits upper end in two forwardly projecting arms, to the lower one ofwhich is attached said rod. 533. lVhen any one of the keys 528 isdepressed and the sliding bar 531 thereby moved rearwardly, theprojection 532v engages the transverse rod 533, drawing said rod andarms 534R and 534L to a rearward position. These are held in thisposition (unless the correction key to .be referred to later isactuated) until a handle 529 (Fig. 1) has been actuated and is about toreturn to its normal position. The train of. mechanism necessary tobring about this result is well known and has been shown in formerpatents and is not necessary to be explained here, it being understoodthat'each sliding bar 531 has a latch at its rear end so adjusted thatsaid sliding bar is held in its rearward position by said latch upon thedepression of any key in the column per taining to said sliding bar, andit being further understood that no other key in said column can. bedepressed when said sliding bar is thus held, and that the key depressedand its sliding bar are held in this locked position until the handle529 has been actuated and has almost completed its return stroke, whenthe latch is released, releasing said bar and key, .both returning totheir normal position and at the same time releasing the transverse rod533.

On the left-hand lower corner of the key board of the machine is a totalkey 550, (Fig. 2) which is attached to an upstanding arm 551a of abell-crank lever 551, pivoted at 552. At the forward end of the arm 5514of bell-crank lever 551 is riveted a pin 553 projecting inwardly. Whenthe arms 534L and 534R are moved rearwardly, as mentioned above, the topportion of arm 534L moves under the pin 553, thereby preventing thedepression of the total key 550 and the operation of said totalmechanism. The object of this construction is to prevent the depressionof the total key when any one of the keys 528 has been depressed.

When the total key 550 has been depressed, lowering the upper arm ofhell crank lever 551, the inwardly projecting pin on said arm passesdownward, and to the rear of the upper rear side of arm 5341., lockingthis arm against a rearward rocking movement and thereby locking all ofsaid numeral keys, so that they cannot then be depressed.

As is well known, this machine has suitable latching means by which eachslide bar 531, numeral keys 528 and total key 550 are automaticallylocked when the handle 529 is actuated, said locking means beingreleased upon the return stroke of said handle. Also, in the well knownconstruction of this machine, there is located on the right hand side ofthe key-board thereof a key 560 (Figs. 11, 12,) by the depression ofwhich key any depressed numeral key is released and resumes its normalposition. It is to be understood that the Burroughs machine to whichthis invention is applied has such latching means above referred to,auto nratically locking and releasing said keys, and such correction key560.

The racks (301 are carried at the forward end of a series of main leversor sector bars 603 (Fig. 2) loosely hung upon a central cross shaft 600,said levers 603 being extended in rear thereof and carrying at theirrear ends, arranged in arcuate form, series of type plates 61S, bearingtype for printing numbers from 0 to 9. When the operating handle of themachine is drawn forward, a frame (513 carried by the shaft 600 islowcred, and those racks 601, which are associat with any bank of amountkeys in have been depressed, follow the said frame until arrested by thestops set by the ijlepressei'l keys. The corresponding upward movementof the rear ends of the levers more into position, opposite'a platen990. type for the printing of the amount ented by the depressed keys. Asthe e r hes the end of its forward stroke the printing is elfected bythe percussive f pivoted hammers 715, the latter I i re rward by drivers716 unie impala of springs 780. A bail composed of side pieces 12 and across-rod 757 mally engages the hammer drivers, but, the operatinghandle is drawn forward, hail is lifted, through the medium of a.cmuiccting the bail with a crank drivers are, however, restrained by717. and are not released until the operating handle is about at the endof its forward stroke. The latches 717 a e controlled by pawls 71Scarried by a s. i i

frame T00 and controlled by the levers 603 through engagement of thetails of said pawls with inclined shoulders on said levers; 'ihus whenno key in a bank is depressed, and consequently no movement of thecorresponding lever (303 takes place, the pawl associated with thatlever will be raised above the notch of the associated latch, and willnot lift the same as the frame 700 swings forward. On the other hand,when the lever 603 is moved by reason of the depression of a key in thecorresponding bank, the associated pawl 718 is not so displaced, but, asthe frame 700 swings forward, will lift the associated latch. Each latch717, except the extreme left hand one, is over lapped at its forward endby a laterally turned tail of the latch next to the left, so that whenany latch, except: the extreme right-lnmd one, is lifted by its pawl718, all the latches to the right will be lifted, whether or not levers603 corresponding with all such latches have been moved. In this way thefilling in of ciphers is provided for in decimal places where no digitsoccur. The racks 601 cooperate with pinions 920 (Figs. 1, 4, 8, 9)strung along a cross-rod or shaft 903, which is carried betweensideplates 9101] and 910R, these side-plates, together with suitabletie-pieces and intermediate plates, making up aframe, (Figs. 8, 9,)which rocks upon a shaft 900 for the purpose of engaging the pinionswith, and disengaging them from, the racks. In an ordinary operation ofthe machine for adding an item or amount, thesepinions remain out ofmesh with the racks during the forward stroke of the operating handleand the consequent downward swing of the racks. Then, as the handlestarts rearwardly. the pinions are brought into mesh with the racks soas to partake of their movements in returning to normal. In theoperation of taking a total, the pinions remain in mesh with the racksduring the forward stroke of the operating handle so that the downwardswin of the racks will turn the pinions backward until they reach zeropositions. Then, if the pinions are to remain at zero, they aredisengaged from the racks, so that the latter may return to nor andwithout affecting the pinions. If, on the other hand sub-total isdesired the pinious remain in mesh with the racks throughout theoperation, so that. having been turned backward to zero, and the totalprinted, they will be again turned forward so as to display the sameaccumulation as before being turned backward.

The custonmry means for controlling the rocl-ii of the accumulator framecomprises a pitman 91 (Fi formed or branched at. its forward c to enstuds 958 and 9-3811 on the rocking frai 4, a three-armed plate or lever913 rocking upon a suitable stud and having its depending arm jointed tosaid pltman, and an arm of a rocklng- -lever 8 13 carried by arock-shaft S00 and having pivoted to its upper end a! springheldwipe-plate or pawl 821 for cooperating with studs 961 and 96166011 theoppositely extending arms of the plate or lever 913. The pitman 91% isconnected by a link 911 with bell crank lever 551 drawn forward and upward by a spring 55%, which thus serves to engage a notch of the upperbranch of the pitman with the stud 9580. This is the normal conditionwhich provides for the pinions 920 being moved out of mesh with theracks at the outset of an operation and into mesh therewith as thehandle starts rearward; The bell crank lever 551, as previouslyexplained, has an upstanding arm at its forwardend surmounted by a key550, (Fig. 2) which is ordinarily termed the total key, and whosedepression results in disengaging the pitman from the stud 958a andbringing a hook of the lower branch of said pitman to rest upon thelower stud 958-. The

link 911 and bell-crank 551 have a slot-andpin connection, so that, whenthe total key has been depressed, and the handle is drawn forward, theresultant forward thrust of the pitman will cause the latters hook todrop by gravity over the stud 958. Then, if the key is held down whilethe handle returns to normal, this hook, acting against the stud 958,will rock the accumulator frame and disengage the pinions from theracks. If, on the other hand, the key is released and allowed to risebefore the handle starts on its rearward stroke, the pitman will belifted and its hook carried above said stud, so that the pinions willremain engaged with the racks and consequently will be turned forward torestore the accumulation,

The lock frame 940 to lock the pinions 920 is pivoted upon the shaft900, its locking dogs 9&6 engaging the teeth of the pinions 920 when thelatter are disengaged from the racks 601 and thrown forward and downwardas previously explained, thereby preventing any accidental turning ofsaid pinions.

The rear arm 8136; of the lever 813 carried on a rock shaft 800 ispivoted to the casing of the dash pot 815. When the handle 529 valves,the full description of said dash pot and valves having been previouslyshown in drawings and patents on file.

.Under the construction and arrangement second spool located uponanother horizontal axis in the extreme upper and rear portion of themachine, and thence led rearward and downward in, a vertical directionover suitable guides between the platenroller and printing-types, andthence forward around a second spool located upon another horizontalaxis in the lower part of the rear end of the machine, the ribbon thusmoving in a vertical direction between the platen and type, and being ofsuflicient width to cover the: entire group of type-carrying levers.

1 will now describe my invention and its attachments to the Burroughsmachine.

- 500 indicates the mechanism of the Burroughs adding machine mountedupon the usual base 501. The bottom part 501a (see I Figs. 5 and 6) ofsaid base has been partially removed as shown in Fig. 2; to allow forthe connection of the mechanism of my inven tion with the Burroughsmachine.

Secured to said base-in any suitable mannor, as by hangers 3, is a baseplate a, upon which issccured, as shown at 5,'the rear end of the entryframe 6, the front end of said frame being secured, as shown at 7, tothe front bar 501F of the base 501. Said entry frame comprises sideplates 9L and 9B con nected together, and spaced at their properdistances by suitable transverse bars and plates, and has at the forwardend an overhanging portion in which, as hereinafter explained, the passbook carriage rcciprocates. Rigidly connected to said side plates 9L and9B are transverse rods 10 and 100'- (see Figs. 2 and 4) upon which cantravel type shifter bars 11. Said type shifter bars are spaced from eachother in their rear portions by being received within notches formed onthe upper side of the bar 10a and at their front ends by means of pins12 extending upwardly from a transverse bar 13 (see 41 and 39,) securedto the inner sides of plates 9L and 9R. Thefront ends of the typeshifter bar 11 are also spaced from each other by thin type supportingbars 14:, hereinafter more particularly described.

of. Into said vertical groove 15 depends an arm 18 of a bell crank lever19 having a suit-able hub 20 pivoted upon a sleeve 21 on a shaft 21aextending between said side plates. The upper arm 22 of said lever isformed with an acute bend 22a to the rear to avoid a shaft 950, which ispart of the mechanism of the Burroughs adding machine, then forwardlyand then, at its extreme upper end 225, straight and almostperpendicular with the center of shaft 21a when at rest. The upper arms22 (see Fig. 1) of the five levers on the left are also bent laterallyor outwardly to the left, then upwardly and those of the two levers onthe right, to the right, and then upwardly, so that the upper ends ofall the levers are substantially in planes between the respectivecolumns of keys of the Burroughs machine, and capable of rocking inlines parallel to said columns. The lower ends of levers 19 arebent.inwardly from their bearings on sleeve 21, then dowinvardly, sothat the. arms 18 at their extreme lower parts mesh with the verticalgrooves 15 and are capable of rocking along lines parallel to said typeshifter bars. i Each upper end is normally held in an upright positionby means of a stud 24 extending laterally from an outwardly bent armattached to and dependent from the forward arm 003a of sector bar orlever 003. To the rear end of each type shifter bar is attached a spring30 (see Fig. at), the front end being secured to transverse bar 31 ofthe frame 0, said spring being normally in tension. By the tension ofthis spring the rear side of the upper arm 22 of the lever 19 is'yieldingly held against its stud 24:, because of the forward pressureof the shoulder 17 of type shifter bar 11 against the lower arm 18 oflever 19. When said arm 603a of lever 603 swings downward andrearwardly, the tension of the spring 30 yieldingly holds the arm :22 ofthe lever 19 against said stud, and the type shifter bar moves forward adistance dependent upon movement of said lever G03. Upon the key in saidcolumn which has thus been depressed depends the distaiu'e through whichthe arm 003m of lever 603 descends and therefore also the distancethrough which the type shifter bar 11 moves.

ll' h-en the handle 529 returns to its normal position the frame 013 ofthe Burroughs machine, which at the forward movement of said handleswung downward and rearwardly, now forces upwardly the depressed arm 60%of lever 603. thereby moving the type shifter bar 11 into its initialposition. In the draw s filed herewith and more particularly in 1* 1g. 1thereof, it will be seen that the Burroughs machine shown hereincomposed of a series of nine sector bars, racks and other par of theBurroughs machine which are of the normal construction, except that thenumeral keys of the ninth column from the right have been detached,leaving only eight columns of keys. My attachment, as shown in thedrawings, has, as will be seen, a series of eight type shifterbars andtheir connections with the eight levers 608, be inning on the right handside of the machine. This method of construction is not essential, as ofcourse there can be as many series of type shifter bars as there aresector bars and columns of keys in and 011 the adding machine, and theconstruction shown does not limit my invention to any certain number ofseries of shifter bars, and the like.

Said type shifter bar is formed, preferably on the other side thereof tothe vertical groove 15, and herein shown on the right hand side and atits forward end, with ten vertical grooves 34: (see Figs. 16 and 8) inwhich can slide vertical type bars 35, there being ten type bars foreach type shifter bar, each having a type face formed on its lower endthereof capable of printing one of the figures 0 to 9, the forward typebar being for the figure 0, and the others in succession for the figures1 to 9. Said type bars are normally upheld in said grooves by means ofthe type supporting bars 14, which alternate with the type shifter bars,and are preferably on the right hand side thereof and are supported attheir forward ends on the transverse bar 107) and at their rear ends tothe transverse rod 10. Said type bar 35 is formed on its right hand sidewith two horizontal grooves 30, 37, (see Fig. the upper groove 36receiving the corresponding type-supporting bar, so that said type barsare thus normally prevented dropping in the grooves 3 1 in the typeshifter bars, since the type-supporting bar abuts against the upper endsof said grooves. Each of the type-supporting bars is formed with agroove or notch 38 Figs. at and 4:6) in its upper edge vertically abovethe printing position, so that, at the end of the forward movement ofthe corresponding type shifter bar, the type bar corresponding to thekey which has cen actuated is brought into vertical register with saidnotch 88. The type bar would thereupon be able to drop in its groove 34.111 the type shifter bar. but this is prevented, until it is actuated bythe hammer as hereinafter described, by means of a controller arm 39(see Figs. 1- and 20) of a lever -10 pivoted upon the transverse bar1013, and having an upper arm 11, the end of which is connected to acoiled spring 12, the other end of said spring being attached to a liart3 extending transversely of the frame 6. The free end of saidcontroller arm 89, which is bent slightly to the left at 39a, so thatthe forward end is directly under the type support ing bar, enters thelower horizontal groove 37 in the type bar and prevents it dropping intothe notch 38 in the supporting bar until actuated by the hammer tohereinafter described. The rear end of controller arm 39 has a slightlyraised cam surface 392) on which the upper edge of groove 37 of typebars rests when at printing position or notch 38. Type bars passing thenotch 33 ride on this elevated cam surface 39?) until the upper edge ofgroove 36 again engages the top of type supporting bar 14. 7

To adjust the position of the controller arms 39 I have placed atransverse bar 416 above the upper arms 41 and at right angles thereto.The tension of springs 42 holds the arm 4L1 yieldingly against saidtransverse bar 41?) thereby keeping the cam surface 39?). in properposition relative to type bars 35.

It'will thus be seen -that, by the depression of the keys in the severalcolumns of the Burroughs adding machine, the respective type shifterbars are moved to the corresponding positions and the type bars shiftedthereby are brought into vertical relation with the hammers hereinafterdescribed, all the type bars, except those in proper print ing position,being supported against downward movement, and the type hars'i'n theprinting position being ready to be de-' aressed against the tension ofsaid springs i2 by the depression of the respective hammers. a

The springs and other mechanisms which operate the hammers i5 and 715always cause said hammers to strike the type with substantially the sameblow, thus effecting a substantially uniform printing impression eachtime the machine is operated. This effect cannot be obtained where theforce of the blow on the type is dependent 011 hand operation thereof.

The respective type bars which have thus been brought into printingposition are adapted to be actuated by hammers 45 (see Figs. 4 and 19)pivoted loosely at their rear ends upona transverse rock shaft L6pivoted in the plates 9L and 9R, said hammers having upwardly projectingarms &7, to the upper ends of which are attached the rear ends ofsprings i8, the front ends of which are attached to a transversestationary bar i9 secured to the frame 6. Said hammers are normallyprevented from dropping by the engagementwith said arms 47 of atransverse stop plate 50 movable vertically in vertical recesses 51 inthe side plates 9L and 9B of the frame 6, said stop plate having roundedends52 extending beyond said'side plates and engaging in cam slots 53 ofrocking cam plates 54L and 54R secured to the transverse roc'k shaft 46.is rocked by means of a link 55 (see Figs. 2 and 5) attached, as shownat 56, to the cam plat-e 54L and connected to an arm 57 of a Said rockshaft bell crank lever pivoted at 58 upon a sleeve fastened to the shaft800, a part of the Burroughs adding machine, and adapted to be actuatedin unison with the dash-pot 815 previously described and with the othermechanism, the movement of which gov erned by said dash pot.

Upon the forward movement of the handle 529, said lever 62 rocks in thedirection of the arrow (see Fig. 2), by the rocking of shaft 800 saidcam plates ML and 54B are rocked, and the cam slots are caused to travelon the projecting ends of the stop plate until the rear ends of said camslots 53 arrive at said projecting ends. Said rear ends of the cam slotsare formed with inclines 64; (see Fig. 5), which, when said rear endsarrive at said projecting ends, have the effect of raising the stopplate in its vertical bearings, and thus permitting the arms 47 of thehammers to move forward. When the stop plate is raised, all the hammers,except those which are re strained by the trigger arms hereinafterdescribed, fall upon the type bars, and cause said type bars to dropagainst the pressure of the springs 42 holding the type controller arms39, forcing said type faces on said type bars against the ribbonllO tobe described later, and thereby eff cting the printing on the paperbeneath said ribbon;

The type shifter bars 11 are formed, at a short distance behind thevertical grooves for the type bars, each with a raised cam portion 66(see Fig. 16), and said cam portions, when the type bars move forward bythe mechanism previously explained, they engage the upwardly inclinedunder sides of trigger arms 67 (see Fig. i) pivoted at 68 on thetransverse shaft 696, secured at either end to plat-es 9B and 9L. Eachtrigger arm has an upwardly curved rear portion ending in a trigger 69,which normally abuts against a lip 70 (see Fig. 4-) extending laterallyfrom the rear portion of arm 45a of the corresponding hammer, andnormally'prevents the downward movement of said hammer, but when thetype bar corresponding to a column in which keys have bee-n depressedmoves forward, said trigger arm is elevated from said lip and permitsthe corresponding hammer to drop when 9L and 9R, and upon one projectingend of said rod is secured one end of the link which actuates the camplates 54:. The slots 81 permit movement of the rod 80 with the camplates, in front of the front edges of the arms 47 of the hammers whichare actuated, and upon the return of the cam plates, said rod 80 movesrcarwardly with said cani plates, and restores to their normal positionsall of said hammers which have been so operated. hen the hammers havebeen so re turned the triggers are likewise restored to their normalposition by the actuation of said springs 75, as explained.

Also when the arms 47 of the hammers have been returned to their normalposit-ion by said rod 80, the stop plate 50 drops in its verticalbearings, locking the hammers until the next operation of the handle529.

Each trigger lever is formed at its rear end thereof with a lip 72extending laterally to the right and entering a hole 73 formed in thenext trigger lever to the right. Consequently when any trigger lever israised by the action of the cam portion of the type shifting bar, allthe trigger levers to the right are also raised. The trigger levers tothe left, however, are not so raised because the hole in each triggerlever is sutliciently deep that the trigger lever can be raised withoutthe bottom of the hole engaging the lip of the lever to the left and soraising said trigger lever. In the Burroughs adding machine, all thesectors or levers 603 are arranged to be moved, in each operation of themachine, a short distance, which movement brings the zero type of saidlevers or sectors into printing position.

In most recording devices used in machines of this general character,the printing is effected on paper usually held on a cylindrical platen.My arrangement of a type shifting bar with its various type bars, saidtype bars being supported by a type carry ing bar, and saidtype-shifting bar having a groove or slot at the printing position, andthe further arrangement of a controller arm and a single springreturning said type bars to normal position after being actuated, makeit possible to use this apparatus to make impressions on a plane platenwithout the necessity of having a separate spring on each type bar,something that would be mechanically diflicult to accomplish whenworking on such close centers as are necessary in an apparatus of thischaracter.

The connection is such that the type shifter bars are all likewise movedso as to bring the zero type into printing position. However, it will beseen that this movement is not sufficient to cause the raised cam 66(see Fig. 4) on the type shifter bar to en gage and raise the triggerarm 07 as this cam is placed on the type shifter bars so as to engageand raise the trigger arm 67 only when said type shifter bar movesbeyond the Zero position. Therefore, if only the numeral key 528representing 9 in the fourth column from the right hand side of themachine is depressed, and the handle 529 actuated, the type barrepresenting 9 in the fourth shifter bar from the right will print 9 andeach type bar at the right will print Zero, viz. 9000. The type bars atprinting position on the left will not print, although each is at Zero,because the trigger arms have not been moved from their normal position.

Extending inwardly from the side plates 9L and 9K- of the frame 0 aretwo pairs of pins 82 which enter slots 83 in guide rods Set, to thelower edges of which guide rods is secured a slide plate 85, extendinglaterally beyond the frame 6, said plate being thus adapted to slide alimited distance along the base of said frame. Fastened to the sides ofside plates 9L and 9R and extending outwardly are two pairs of pins 100on which revolves two pairs of wheels lOl. These wheels are so adjustedthat the slide plate presses against and slides on said wheels, ashereinafter described. Attached rigidly at its rear end to said slideplate is aplaten plate 86 (see Figs. 4, 30 and 3st), which is preferablymade of thin steel the forward end and sides being rounded and the platebeing much narrower than said slide plate 85. Said platen plate, beingunsupported at its front portion, except as hereinafter described, candrop from said slide plate 85 a sufficient distance to permit a sheet ofpaper to pass therebetween. Beneath the platen plate 86 is a supportingplate 87, loosely attached to the slide plate 85 by guide rods 95rigidly fixed to said slide plate and depending from the rear endthereof, said guide rods passing through holes in the supporting plate87. Said supporting plate is supported by wheels 88/4 of studs 88,projecting laterally from the upper arms 89 of two pairs of bell cranklevers, 8913, said bell crank levers being rigidly mounted upontransverse shafts 90, one of said shafts being extended and providedwith a handle 91 for operating the same. The other arms of said bellcrank levers are connected by links 92 to which are attached springs 93,said springs being also connected to studs 94 upon the base plate at.Said bell crank levers being all of the same size. the supporting platecan have a directly vertical movement, said movement being guided by theguide rods 95 depending from the side plate 85 and having heads 96limit-' ing the downward movement of the supporting plate 87. l l henthe handle 91 is pressed in the direction of the arrow, the four studs88 simultaneously swing downward all in the same direction and allowingthe supporting plate to correspondingly drop. The platen plate, beingconnected at its rear end only to slide plate 85, drops part way at itsforward end. The slide plate supporting these suspended parts now restson the pins 82, attached to the plates 9L and 9K in slots 83 of guiderods 8 1 attached rigidly to the said slide plate. Upon releasing thehandle 91, the tension of the springs 93 forces the supporting plate,the platen plate and slide plate together and presses the slide plateagainst the wheels 401 attached to side plates 9L and 9R of frame 6.

The slide plate 85 is formed at its forward end thereof with atransversely extending slot 97, to expose to the printing action of thetype the paper 86D (see Fig. 5) which is inserted beneath the slideplate and on the platen. On the platen beneath the slot 97 is inserted apiece of rubber 86 or a yielding material, to receive the impact of theprinting type.

The present device is intended especially, although not exclusively, forthe printing in a pass book of the amounts of deposits, thus dispensingwith the necessity of entering said deposits by handwriting, and alsoproviding, hereinafter described, a mechanism for preserving a record ofsaid de posits.

The supporting plate 87 itself is adapted to support the pass book,which is inserted between the supporting plate and platen, while thesheet which is to be printed upon is inserted between the platen 86 andthe slide plate 85,'said platen being of such width that when insertedbeneath a sheet of the pass book on either side, the slot 97 will be insuch position that the printing of the amount of the deposit will bedone in the column usually provided for the entry of the said amount(see Figs. 1 and'28 to 34) Two thin strips of metal 97 a, securelyfastened across the slot 97 and at right angles thereto, serve asregister points, so the paper or leaf of a book can be insertedcorrectly to receive the printed impression at the right place. Themechanism ust above 7 described for lowering the supporting platepermits of easily inserting the pass book, so that the printing may beefiected upon the paper in the proper position immediately below theprevious-records of deposits, and, upon releasing saidmechanism, thespring 93 raises the supporting plate, so that the book is then clampedand held in said position. I term the slide plate 85, the platen plate86 and supporting plate 87, the pass book-carria e since. as willhereinafter be described, these parts'have a common reciprocatingmotion.

The partlcular construct on of tllQSllClcplate 85, the platen plate 86and the supportingplate 87 is very important, as thereby one leaf of apass book'can beheld be tween the platen plate and the slide plate whilethe balanceof's'aid book is clamped between the supporting plate and theplaten plate, thereby giving a uniform surface upon which to print.

adding machine which is actuated simulta neously with the movement ofthe handle 529 of said machine and not through the interposition of thedash pot, is a crank arm 102, to the end of which is attached a steeltape 103, which passes around a pulley 104 having bearings supportedupon the base plate 4, the front end of which tape is attached to aspring 105 secured at its front end to the slide plate. Therefore therearward movement of said slide plate together with other parts of saidpass book carriage commences with the movement of the handle 529, asshaft 540 rotates in the direction of the arrow upon the forwardmovement of said handle. Said slide plate arrives at the proper positionfor printing, before the handle 529 has reached the end of its movement,and before the inclines Get in the cam slots 53 have acted upon theprojecting ends of the stop plate 50 to raise the same and release thehammers, and further rearward movement of said slide plate is preventedby the rearwardly extending arm 107 secured to said slide plate,abutting against the end of an adjustment'screw 106 (see Fig. 4) securedin block 4a. fastened to base 4. The

further movement of the handle 529, during which movement the saidhammers are released, through the tension on said tape expands saidspring 105. By turning the adjustment screw 106 the limit of therearward movement of said slide plate can be adjusted to exact printingposition.

It is to permit of said slide plate being at rest at the printingposition when the hammers are released that I provide the spring 105.When the rearward movement of the slide-plate has ceased, owing to itshaving engaged the stop screw 106, as before explained, said spring isexpanded by the further movement of the handle. The release of saidhammers has been timed to be accomplished after said arm 107 abutsagainst the stop screw 106.

The slide plate is returned to its normal position, forwardly of themachine, upon the return stroke of the handle 529, by means of a spring108 attached at its rear end to a stem 109 depending from said extension107 and at its front end to the base plate 1.

The printing ribbon 110 (Figs. 1, 5, and 7) which extends under theforward end of frame 6 above the slide plate 85 and below the printingline of the type bars, is wound upon spools 111 and 11166 fastened toplates 9E and 9L of frame 6, said ribbon being advanced and reversedwith the movement of the machine in any customary manner, preferably inthe samemanner as that used in the Burroughs adding machine. In this

